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Mon, 5 Sep 2022 23:17:30 +0000 Message-ID: <871qsp9zsm.wl-kuninori.morimoto.gx@renesas.com> From: Kuninori Morimoto Subject: [PATCH 1/4] ASoC: soc-dapm.c: don't use kzalloc() for param on snd_soc_dai_link_event_pre_pmu() User-Agent: Wanderlust/2.15.9 Emacs/26.3 Mule/6.0 To: Mark Brown In-Reply-To: <8735d59zt9.wl-kuninori.morimoto.gx@renesas.com> References: <8735d59zt9.wl-kuninori.morimoto.gx@renesas.com> Date: Mon, 5 Sep 2022 23:17:29 +0000 X-ClientProxiedBy: TYBP286CA0017.JPNP286.PROD.OUTLOOK.COM (2603:1096:404:ce::29) To OS3PR01MB8426.jpnprd01.prod.outlook.com (2603:1096:604:194::10) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 8a765e18-5592-4ecf-858b-08da8f94cdd0 X-MS-TrafficTypeDiagnostic: TYCPR01MB8191:EE_ X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: TrfcaVGVq+zP0nVqHq5FdDRId0PyQehvnnSM9IBMtkbaZ8hECvj8/TgLHf62Q6AnVdAKnKYR8bf4xUwTTP0QLAHrCUc582Dv2Izi2O0zXGvQj2wuuK8p6NhyIgKgDeNt9ZYuh1uUdAwzN3VFHOMKLZZEkDTwNSqTSuBLeBzjggO0zdobBFh9LEy45aJjFZHjkZmaJouRkx5gkvvkSD+ICnFG20CX/X7rmadjrp67gAyYTVc6sZ6f3S6ZvMd4tSzp9ACqOgyflV2xf2rdu3PLvQlB/UNUaNaAeBRPcb5ikDZzMNTiRpZtWV8pCzwDTttGqXOlN6VCDVTBKYVzW+Zg5BvD1oOqHIgaE5G+NkBp30YlARZBdaC0rhaP5AhjZbzgtib/yQkv5HoVTi11jCQ0s+jjFUn9UG/xM75V1JfkTyR2R9ewEbg4131uzY1f0g3LJJWLsFiH+iIDr08byACmIGl4ussCi54hIK1MKGDuBU7MUChEIkYfBEb1sV7w2R1nj7aSZIY60B1Xre/v5anXmqASdVPoAQ5axsFYg6GPvlh0PF13GyxIJ1DdZtDEvUPOnyiLpnprJWwl3x16PjlNb1ZXoEGXz1bGPSytpgZUb2hGQxtGTtyTYLucFf6/ls01ICO5Yl3vvVLduZ81+Rd6AzqUI8+h45jNKKpKXkeq4nWGlZp7tHjaAqovVhBAnS7xAzanGSiDCkY4751AzcPeJTRnAeU5V/jXgqXXWpLD1BE4EhuHTIRE5ErKQP3k4MItPAMvgvWAuxn9v2xEiTyKMg== X-Forefront-Antispam-Report: CIP:255.255.255.255; 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It is used for setup rtd at end of this function, just a local variable. We don't need to use kzalloc() / kfree() for it. This patch replace it as local variable. Signed-off-by: Kuninori Morimoto --- sound/soc/soc-dapm.c | 38 +++++++++++++++----------------------- 1 file changed, 15 insertions(+), 23 deletions(-) diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c index 73b8bd452ca7..7d4e4068f870 100644 --- a/sound/soc/soc-dapm.c +++ b/sound/soc/soc-dapm.c @@ -3837,15 +3837,13 @@ snd_soc_dai_link_event_pre_pmu(struct snd_soc_dapm_widget *w, struct snd_soc_dapm_path *path; struct snd_soc_dai *source, *sink; struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); - struct snd_pcm_hw_params *params = NULL; + struct snd_pcm_hw_params params; const struct snd_soc_pcm_stream *config = NULL; struct snd_pcm_runtime *runtime = NULL; unsigned int fmt; int ret = 0; - params = kzalloc(sizeof(*params), GFP_KERNEL); - if (!params) - return -ENOMEM; + memset(¶ms, 0, sizeof(params)); runtime = kzalloc(sizeof(*runtime), GFP_KERNEL); if (!runtime) { @@ -3902,45 +3900,39 @@ snd_soc_dai_link_event_pre_pmu(struct snd_soc_dapm_widget *w, goto out; } - snd_mask_set(hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT), fmt); - hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE)->min = - config->rate_min; - hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE)->max = - config->rate_max; - hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS)->min - = config->channels_min; - hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS)->max - = config->channels_max; + snd_mask_set(hw_param_mask(¶ms, SNDRV_PCM_HW_PARAM_FORMAT), fmt); + hw_param_interval(¶ms, SNDRV_PCM_HW_PARAM_RATE)->min = config->rate_min; + hw_param_interval(¶ms, SNDRV_PCM_HW_PARAM_RATE)->max = config->rate_max; + hw_param_interval(¶ms, SNDRV_PCM_HW_PARAM_CHANNELS)->min = config->channels_min; + hw_param_interval(¶ms, SNDRV_PCM_HW_PARAM_CHANNELS)->max = config->channels_max; substream->stream = SNDRV_PCM_STREAM_CAPTURE; snd_soc_dapm_widget_for_each_source_path(w, path) { source = path->source->priv; - ret = snd_soc_dai_hw_params(source, substream, params); + ret = snd_soc_dai_hw_params(source, substream, ¶ms); if (ret < 0) goto out; - dapm_update_dai_unlocked(substream, params, source); + dapm_update_dai_unlocked(substream, ¶ms, source); } substream->stream = SNDRV_PCM_STREAM_PLAYBACK; snd_soc_dapm_widget_for_each_sink_path(w, path) { sink = path->sink->priv; - ret = snd_soc_dai_hw_params(sink, substream, params); + ret = snd_soc_dai_hw_params(sink, substream, ¶ms); if (ret < 0) goto out; - dapm_update_dai_unlocked(substream, params, sink); + dapm_update_dai_unlocked(substream, ¶ms, sink); } - runtime->format = params_format(params); - runtime->subformat = params_subformat(params); - runtime->channels = params_channels(params); - runtime->rate = params_rate(params); - + runtime->format = params_format(¶ms); + runtime->subformat = params_subformat(¶ms); + runtime->channels = params_channels(¶ms); + runtime->rate = params_rate(¶ms); out: - kfree(params); return ret; } From patchwork Mon Sep 5 23:17:43 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kuninori Morimoto X-Patchwork-Id: 603066 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 4BA9DECAAD3 for ; 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It is using dev_err() (A) if it was NULL, so we don't need to use WARN_ON() (B) to check it, it is over-kill. This patch removes it. (B) if (WARN_ON(!config)) { (A) dev_err(...); ... } Signed-off-by: Kuninori Morimoto --- sound/soc/soc-dapm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c index 7d4e4068f870..bc7d64b570b4 100644 --- a/sound/soc/soc-dapm.c +++ b/sound/soc/soc-dapm.c @@ -3883,7 +3883,7 @@ snd_soc_dai_link_event_pre_pmu(struct snd_soc_dapm_widget *w, * necessary */ config = rtd->dai_link->params + rtd->params_select; - if (WARN_ON(!config)) { + if (!config) { dev_err(w->dapm->dev, "ASoC: link config missing\n"); ret = -EINVAL; goto out; From patchwork Mon Sep 5 23:17:50 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kuninori Morimoto X-Patchwork-Id: 602759 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 073E4ECAAA1 for ; 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Unnecessary if/else is not good for readable code. this patch checks if config->formats was zero and call "goto out" in such case. [not readable] if (config->formats) { (A) fmt = ... } else { ... (B) goto err; } [readable] if (!config->formats) { ... (B) goto err; } (A) fmt = ... Moreover, we don't need to indicate config->formats value in error message, because it is zero. => if (config->formats) { ... } else { dev_warn(w->dapm->dev, "ASoC: Invalid format %llx specified\n", => config->formats); ... } Signed-off-by: Kuninori Morimoto --- sound/soc/soc-dapm.c | 10 ++++------ 1 file changed, 4 insertions(+), 6 deletions(-) diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c index bc7d64b570b4..e8c813586b53 100644 --- a/sound/soc/soc-dapm.c +++ b/sound/soc/soc-dapm.c @@ -3890,16 +3890,14 @@ snd_soc_dai_link_event_pre_pmu(struct snd_soc_dapm_widget *w, } /* Be a little careful as we don't want to overflow the mask array */ - if (config->formats) { - fmt = ffs(config->formats) - 1; - } else { - dev_warn(w->dapm->dev, "ASoC: Invalid format %llx specified\n", - config->formats); - + if (!config->formats) { + dev_warn(w->dapm->dev, "ASoC: Invalid format was specified\n"); ret = -EINVAL; goto out; } + fmt = ffs(config->formats) - 1; + snd_mask_set(hw_param_mask(¶ms, SNDRV_PCM_HW_PARAM_FORMAT), fmt); 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Mon, 5 Sep 2022 23:17:58 +0000 Message-ID: <87wnah8l7e.wl-kuninori.morimoto.gx@renesas.com> From: Kuninori Morimoto Subject: [PATCH 4/4] ASoC: soc-dapm.c: fixup snd_soc_dapm_new_control_unlocked() error handling User-Agent: Wanderlust/2.15.9 Emacs/26.3 Mule/6.0 To: Mark Brown In-Reply-To: <8735d59zt9.wl-kuninori.morimoto.gx@renesas.com> References: <8735d59zt9.wl-kuninori.morimoto.gx@renesas.com> Date: Mon, 5 Sep 2022 23:17:57 +0000 X-ClientProxiedBy: TYAPR01CA0174.jpnprd01.prod.outlook.com (2603:1096:404:ba::18) To OS3PR01MB8426.jpnprd01.prod.outlook.com (2603:1096:604:194::10) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 89987b2c-46b0-4e52-99d6-08da8f94de9a X-MS-TrafficTypeDiagnostic: TYAPR01MB5852:EE_ X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:255.255.255.255; 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It is using "goto request_failed" (A), but error message is using "w->name" (B) which is not yet created in such timing. snd_soc_dapm_new_control_unlocked(xxx) { ... switch (w->id) { case xxx: ... if (IS_ERR(...)) { ret = PTR_ERR(...); (A) goto request_failed; } ... } prefix = soc_dapm_prefix(...); if (prefix) (B) w->name = kasprintf(...); else (B) w->name = kstrdup_const(...); ... (A) request_failed: if (ret != -EPROBE_DEFER) (B) dev_err(..., w->name, ...); return ...; } we can create "w->name" at beginning of this function. In such case, we need to call kfree_const(w->name) at error case. This patch do these. Signed-off-by: Kuninori Morimoto --- sound/soc/soc-dapm.c | 27 +++++++++++++-------------- 1 file changed, 13 insertions(+), 14 deletions(-) diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c index e8c813586b53..928e3bfe7457 100644 --- a/sound/soc/soc-dapm.c +++ b/sound/soc/soc-dapm.c @@ -3630,10 +3630,18 @@ snd_soc_dapm_new_control_unlocked(struct snd_soc_dapm_context *dapm, enum snd_soc_dapm_direction dir; struct snd_soc_dapm_widget *w; const char *prefix; - int ret; + int ret = -ENOMEM; if ((w = dapm_cnew_widget(widget)) == NULL) - return ERR_PTR(-ENOMEM); + goto cnew_failed; + + prefix = soc_dapm_prefix(dapm); + if (prefix) + w->name = kasprintf(GFP_KERNEL, "%s %s", prefix, widget->name); + else + w->name = kstrdup_const(widget->name, GFP_KERNEL); + if (!w->name) + goto name_failed; switch (w->id) { case snd_soc_dapm_regulator_supply: @@ -3672,17 +3680,6 @@ snd_soc_dapm_new_control_unlocked(struct snd_soc_dapm_context *dapm, break; } - prefix = soc_dapm_prefix(dapm); - if (prefix) - w->name = kasprintf(GFP_KERNEL, "%s %s", prefix, widget->name); - else - w->name = kstrdup_const(widget->name, GFP_KERNEL); - if (w->name == NULL) { - kfree_const(w->sname); - kfree(w); - return ERR_PTR(-ENOMEM); - } - switch (w->id) { case snd_soc_dapm_mic: w->is_ep = SND_SOC_DAPM_EP_SOURCE; @@ -3770,9 +3767,11 @@ snd_soc_dapm_new_control_unlocked(struct snd_soc_dapm_context *dapm, if (ret != -EPROBE_DEFER) dev_err(dapm->dev, "ASoC: Failed to request %s: %d\n", w->name, ret); - + kfree_const(w->name); +name_failed: kfree_const(w->sname); kfree(w); +cnew_failed: return ERR_PTR(ret); }